Question: When was Gerd Muller a member of the German under-23 football team?
Paraphrase: In what year was Gerd Muller a play on the 23 and under German football team?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q43744 p:P54 ?s . ?s ps:P54 wd:Q1202768 . ?s pq:P580 ?value}